Anomaly Cancelations in Orientifolds with Quantized B Flux

Details Anomaly Cancelations in Orientifolds with Quantized B Flux Anomaly Cancelations in Orientifolds with Quantized B Flux

1999-07-27

arxiv.org/abs/hep-th/9907203v2

Nucl.Phys. B569 (2000) 329-361

Physics

High Energy Physics

High Energy Physics - Theory

Revtex 3.0, 34 pages, 2 figures, references added

Scientific paper

10.1016/S0550-3213(99)00647-1

We consider anomaly cancelations in Type IIB orientifolds on T^4/Z_N with quantized NS-NS sector background B-flux. For a rank b B-flux on T^4 (b is always even) and when N is even, the cancelation requires a 2^{b/2} multiplicity of states in the 59-open string sector. We identify the twisted sector R-R scalars and tensor multiplets which are involved in the Green-Schwarz mechanism. We give more details of the construction of these models and argue that consistency with the 2^{b/2} multiplicity of 59-sector states requires a modification of the relation between the open string 1-loop channel modulus and the closed string tree channel modulus in the 59-cylinder amplitudes.

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